A vibration isolating device for high parameter equilateral triangle arranged U-shaped tube bundle and a mounting method thereof

Abstract

A kind of high parameter equilateral triangle arrangement U-shaped tube bundle vibration damper and installation method suitable for, including support component and vibration damper component, the support component is fixed on the bulkhead, vibration damper component includes grid strip and grid plate, grid plate is obliquely arranged along the acute angle direction with equipment axis line, adapts the tube bridge spacing of equilateral triangle arrangement heat exchange pipe, one end of grid plate is connected with support component, other end is with grid strip with hooking structure movable cooperation.Adopt the above structure, effectively inhibit equilateral triangle U-shaped tube bundle vibration, adapt thermal expansion, strong versatility, installation is simple, do not damage tube bundle.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger equipment technology, and in particular to a vibration damping device and installation method suitable for high-parameter equilateral triangular arrangement of U-shaped tube bundles. Background Technology

[0002] U-tube heat exchangers are widely used in high-parameter heat exchange conditions in industries such as petroleum, chemical, and power. U-tube bundles are prone to fluid-induced vibration under the lateral scouring action of the shell-side fluid, especially in the bends. Long-term operation can lead to heat exchange tube wear and fatigue fracture, affecting equipment safety and service life.

[0003] In existing technologies, most U-shaped tube bundle vibration damping devices are fixed structures. The fixed vibration damping components and the tube bundle have inconsistent thermal expansion coefficients, which can generate additional stress during high-parameter operation and easily cause damage to the tube bundle. The vibration damping structures are mostly customized for specific equipment, with poor versatility, and cannot be adapted to equilateral triangular tube bundles with different diameters and bending radii. The overall structure is complex, and the processing and installation are cumbersome. Some vibration damping devices rely on the tube bundle for load-bearing, which increases the additional load on the tube bundle. At the same time, insufficient space is reserved for the expansion of the tube bundle, which restricts the free deformation of the tube bundle.

[0004] Therefore, there is an urgent need for a vibration damping technology solution that is versatile, simple in structure, easy to install, does not restrict thermal expansion, and does not rely on the force of the tube bundles. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a vibration damping device and installation method suitable for high-parameter equilateral triangular U-shaped tube bundles, which effectively suppresses the vibration of equilateral triangular U-shaped tube bundles, adapts to thermal expansion, has strong versatility, is easy to install, and does not damage the tube bundle.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a vibration damping device suitable for high-parameter equilateral triangular U-shaped tube bundles, including a support component and a vibration damping component. The support component is fixed on a partition plate, and the vibration damping component includes grid strips and grid plates. The grid plates are arranged obliquely along a direction that forms an acute angle with the axis of the equipment, adapting to the tube bridge spacing of the equilateral triangular heat exchange tubes. One end of the grid plate is connected to the support component, and the other end is movably engaged with the grid strips by a hook structure.

[0007] In a preferred embodiment, the support assembly includes a bracket plate, a support plate, and a top plate frame. The bracket plate is fixed to the partition via the support plate, and the top plate frame is formed by a right top plate, a left top plate, and a top plate connected together.

[0008] In a preferred embodiment, the top plate frame surrounds the tube bundle outline and maintains a gap of not less than 20 millimeters between it and the tube bundle.

[0009] In a preferred embodiment, one end of the grid plate is fixedly connected to the top plate frame, and the other end is bent to form a hook-shaped structure, which hooks into the opening of the grid strip to realize expansion movement along the axis of the equipment.

[0010] In a preferred embodiment, the grid strips are set to a V-shape or multi-faceted shape according to the bending radius of the tube bundle, and are used to arrange multiple sets of grid plates. The grid plates are adapted to the spacing between heat exchange tubes and tube bridges of different specifications by adjusting the bending angle.

[0011] In the preferred embodiment, the grid plate and each layer of heat exchange tubes are in point contact, and the grid plate spacing is determined based on the geometric relationship of the equilateral triangular tube bundle arrangement.

[0012] In the preferred embodiment, the support components and vibration damping components are all made of steel plates, and both ends of the grid plate are supported, thus not forming a cantilever structure.

[0013] In the preferred embodiment, the support component and the vibration damping component are independently fixed to the partition plate, do not rely on the tube bundle for support, and do not apply additional force to the tube bundle.

[0014] The present invention provides a vibration damping device and installation method suitable for high-parameter equilateral triangular U-shaped tube bundles. By adopting the above structure, it has the following beneficial effects: (1) It can solve the vibration problem of U-shaped tube bundles in equilateral triangles under high parameter conditions. The hooked movable structure is adapted to thermal expansion to avoid damage to the tube bundle. (2) The device is highly versatile and can be adapted to tube bundles of different specifications; it has a simple structure, is easy to process and install, and is independently supported without relying on the tube bundle for force, thus protecting the tube bundle for safe operation. (3) The entire board is processed, making manufacturing simple; the matching installation method is orderly and convenient, eliminating the need for layer-by-layer calibration and improving assembly efficiency. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a cross-sectional schematic diagram of the corner position of the overall structure of the present invention.

[0017] In the diagram: 1. Support plate; 2. Right top plate; 3. Support plate; 4. Top plate; 5. Grid strip; 6. Left top plate; 7. Partition plate; 8. Heat exchange tube; 9. Detailed Implementation

[0018] Example 1: like Figure 1-2As shown, a vibration damping device suitable for high-parameter equilateral triangular U-shaped tube bundles includes a support component and a vibration damping component. The support component is stably fixed on the partition plate 8, providing a reliable installation foundation for the entire device. The vibration damping component includes grid strips 5 and grid plates 6. The grid plates 6 are arranged obliquely along a direction at a set 60-degree angle to the axis of the equipment, precisely matching the tube bridge spacing of the equilateral triangular heat exchange tubes 9. One end of the grid plate 6 is firmly connected to the support component, and the other end is connected to the grid strips 5 by a hook structure to form a movable fit, effectively reserving sufficient thermal expansion space for the tube bundle and the vibration damping device, and avoiding internal stress caused by thermal expansion.

[0019] In a preferred embodiment, the support assembly includes a bracket plate 1, a support plate 3, and a top plate frame. The bracket plate 1 is reliably fixed to the partition plate 8 via the support plate 3. The top plate frame is formed by connecting the right top plate 2, the left top plate 7, and the top plate 4 to form a complete top support structure.

[0020] In the preferred embodiment, the top plate frame completely surrounds the tube bundle outline and maintains a predetermined gap between it and the tube bundle to avoid direct contact with the tube bundle and ensure the safe operation of the tube bundle.

[0021] In a preferred embodiment, one end of the grid plate 6 is fixedly connected to the top plate frame, and the other end is bent to form a hook-shaped structure, which is stably hooked into the opening of the grid strip 5, so as to realize the free expansion and movement of the vibration damping device along the axis of the equipment and adapt to the thermal deformation requirements.

[0022] In a preferred embodiment, the grid strip 5 is flexibly configured into a V-shape or a multi-faceted shape according to the bending radius of the tube bundle, and can be used to arrange multiple sets of grid plates 6. The grid plates 6 can be adapted to different specifications of heat exchange tubes 9 and different sizes of tube bridge spacing by adjusting the bending angle, thereby improving the versatility of the device.

[0023] In the preferred embodiment, the grid plate 6 and each layer of heat exchange tubes 9 are in stable point contact. The spacing of the grid plate 6 is reasonably determined based on the geometric relationship of the equilateral triangular tube bundle, which effectively limits the vibration displacement of the tube bundle.

[0024] In the preferred embodiment, the support components and vibration damping components are all made of sheet metal, which is simple in structure and easy to process. Both ends of the grid plate 6 are effectively supported, without forming a cantilever structure, thus optimizing the load distribution and improving the overall stability of the device.

[0025] In the preferred embodiment, the support component and the vibration damping component are independently fixed to the partition plate 8, without relying on the tube bundle for bearing the force, and without applying additional force to the tube bundle, thus avoiding damage to the tube bundle due to additional load.

[0026] Example 2: like Figure 1-2In the present invention, a vibration damping device suitable for high-parameter equilateral triangular U-shaped tube bundles includes a support assembly and a vibration damping assembly. The support assembly comprises a bracket plate 1, a support plate 3, a right top plate 2, a left top plate 7, and a top plate 4, which are welded and fixed together to form a complete support assembly. The bracket plate 1 is fixed to the partition plate 8 through the support plate 3, and the top plate frame surrounds the tube bundle with a 25mm gap. The vibration damping component includes grid strips 5 and grid plates 6. The grid plates 6 are arranged at a 60-degree angle to the axis. For heat exchange tubes 9 with a diameter of 16 mm and a tube spacing of 22 mm, the grid plate 6 is 3 mm wide. One end of the grid plate 6 is welded to the top plate frame, and the other end is bent and hooked into the square hole of the grid strips 5. The grid bar 5 has a V-shaped structure to accommodate the bending radius of the U-shaped tube bundle. The grid plate 6 and the heat exchange tube 9 are in partial contact, and the two ends are supported without cantilever.

[0027] Example 3: like Figure 1-2 The working principle of this invention is as follows: Step 1: Assemble the partition plate 8 into place, and insert the first row of heat exchange tubes 9 at a 60-degree angle to the tube sheet; Step 2: Weld the bracket plate 1 to the partition plate 8 and fix it with the support plate 3. Then weld the grid strip 5 to the bracket plate 1. Step 3: Install the corresponding grid plate 6 on the side of the first column of heat exchange tubes 9. The length is determined according to the installation position. Ensure that the grid plate 6 does not exceed the outline of the top plate frame and hook the grid plate 6 to the grid strip 5. Step 4: Install the subsequent heat exchange tubes 9 at a 60-degree angle in sequence, and install the corresponding grid plates 6 simultaneously until the tube installation is completed. The grid plates 6 are installed row by row in the order of "install one tube, install one grid plate". Step 5: Weld the right top plate 2 and the left top plate 7 to the support plate 1, then weld the top plate 4 to the right top plate 2 and the left top plate 7, and finally fix the grid plate 6 to the top plate frame formed by the top plate 4, the right top plate 2 and the left top plate 7.

[0028] The beneficial effects of this invention are: The grid plate 6 obliquely fills the gap between the tube bridges, improving the overall rigidity of the tube bundle. The point contact constraint effectively limits vibration displacement and significantly reduces the risk of fluid-induced vibration. The hook-connected movable structure of the grid plate 6 can expand and move freely, eliminating the internal stress caused by the inconsistent thermal expansion between the device and the tube bundle, and avoiding fatigue damage to the tube bundle.

[0029] The grid strip 5 can be adapted to pipe bundles with different bending radii, and the grid plate 6 can be adjusted to bend the angle to adapt to different pipe diameters and pipe bridge spacing, without the need for customization for a single device; The entire sheet metal processing is simple to manufacture, and the matching installation method is orderly and convenient, eliminating the need for layer-by-layer calibration and improving assembly efficiency. The device is independently fixed to the partition 8, does not rely on the tube bundle for support, and does not apply additional load. The top plate frame and the tube bundle are reserved with a gap to avoid contact wear. The grid plate 6 has a cantilever-free support structure at both ends, resulting in a reasonable load distribution, high overall strength and stability of the device, and suitability for long-term operation with high parameters.

Claims

1. A vibration damping device suitable for high-parameter equilateral triangularly arranged U-shaped tube bundles, characterized in that: It includes a support component and a vibration damping component. The support component is fixed on the partition (8). The vibration damping component includes a grid strip (5) and a grid plate (6). The grid plate (6) is arranged obliquely along an acute angle with the axis of the equipment to adapt to the pipe bridge spacing of the heat exchange tubes (9) arranged in an equilateral triangle. One end of the grid plate (6) is connected to the support component, and the other end is movably engaged with the grid strip (5) by a hook structure.

2. The vibration damping device for high-parameter equilateral triangular U-shaped tube bundles according to claim 1, characterized in that: The supporting components include a bracket plate (1), a support plate (3) and a top plate frame. The bracket plate (1) is fixed to the partition plate (8) by the support plate (3). The top plate frame is composed of a right top plate (2), a left top plate (7) and a top plate (4) connected together.

3. The vibration damping device for a high-parameter equilateral triangular U-shaped tube bundle according to claim 2, characterized in that: The top plate frame surrounds the tube bundle outline and maintains a gap of not less than 20 millimeters between itself and the tube bundle.

4. The vibration damping device for a high-parameter equilateral triangular U-shaped tube bundle according to claim 1, characterized in that: One end of the grid plate (6) is fixedly connected to the top plate frame, and the other end is bent to form a hook-shaped structure, which is hooked into the opening of the grid strip (5) to realize expansion movement along the axis of the equipment.

5. A vibration damping device suitable for high-parameter equilateral triangular U-shaped tube bundles according to claim 1, characterized in that: The grid strips (5) are set to V-shape or multi-faceted shape according to the bending radius of the tube bundle, and are used to arrange multiple sets of grid plates (6). The grid plates (6) are adapted to the spacing between heat exchange tubes (9) and tube bridges of different specifications by adjusting the bending angle.

6. The vibration damping device for a high-parameter equilateral triangular U-shaped tube bundle according to claim 1, characterized in that: The grid plate (6) and each heat exchange tube (9) are in point contact. The spacing of the grid plate (6) is determined according to the geometric relationship of the tube bundle arranged in an equilateral triangle.

7. A vibration damping device suitable for high-parameter equilateral triangular U-shaped tube bundles according to claim 1, characterized in that: The support components and vibration damping components are all made of steel plates. Both ends of the grid plate (6) are supported, and no cantilever structure is formed.

8. A vibration damping device suitable for high-parameter equilateral triangular U-shaped tube bundles according to claim 1, characterized in that: The support components and vibration damping components are independently fixed to the partition (8), do not rely on the tube bundle for support, and do not apply additional force to the tube bundle.

9. An installation method for a vibration damping device suitable for a high-parameter equilateral triangular arrangement of U-shaped tube bundles according to any one of claims 1-8, characterized in that... Includes the following steps: Step 1: Assemble the partition (8) in place and insert the first row of heat exchange tubes (9) at a 60-degree angle to the tube sheet. Step 2: Weld the bracket plate (1) to the partition plate (8), fix it with the support plate (3), and then weld the grid strip (5) to the bracket plate (1). Step 3: Install the corresponding grid plate (6) on the side of the first column of heat exchange tubes (9) so that the grid plate (6) is hooked to the grid strip (5); Step 4: Install the subsequent heat exchange tubes (9) at a 60-degree angle in sequence, and install the corresponding grid plates (6) simultaneously until the tube installation is completed; Step 5: Weld the right top plate (2) and the left top plate (7) to the support plate (1), then weld the top plate (4) to the right top plate (2) and the left top plate (7), and finally fix the grid plate (6) to the top plate frame formed by the top plate (4), the right top plate (2) and the left top plate (7).

10. The installation method of a vibration damping device suitable for a high-parameter equilateral triangular arrangement of U-shaped tube bundles according to claim 9, characterized in that: The length of the grid plate (6) is determined according to the installation position to ensure that the grid plate (6) does not exceed the outline of the top frame. The installation method of the grid plate (6) is carried out row by row in the order of "passing through a column of tubes and installing a grid plate", without the need to calibrate the shape and position of the vibration damping components layer by layer.

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